Now showing items 21-40 of 231

    • Advances in antenna technology for wireless handheld devices 

      Anguera Pros, Jaume; Andújar Linares, Aurora; Huynh, Minh-Chau; Orlenius, Charlie; Picher, Cristina; Puente Baliarda, Carles (2013)
      Article
      Open Access
      The constant evolution of wireless handheld devices together with the apparition of multiple wireless communication systems fosters the antenna community to design new radiating and measurements systems capable of satisfying ...
    • Agrupación submuestreada operando en modo fractón utilizando antenas microstrip inspiradas en el fractal de Sierpinski 

      Anguera Pros, Jaume; Montesinos, Gemma; Puente Baliarda, Carles; Borja, C.; Soler, Jordi (Unión Científica Internacional de Radio (URSI), 2003)
      Conference report
      Open Access
      A high-directivity microstrip array using mul- tilevel elements based on a fractal geometry is theoretically compared with one using a circular patches. Within the same electrical area, the same directivity can be ...
    • Alineament d'interferències, gestió d'interferències i diversitat de polarització 

      Gurrera Edo, Aniol (Universitat Politècnica de Catalunya, 2015-03-19)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] This project deals with the interference management in multiuser environments through the K-User MxN MIMO Interference Channel (IC)
    • An alternative wearable tracking system based on a low-power wide-area network 

      Fernández García, Raúl; Gil Galí, Ignacio (2017-03-14)
      Article
      Open Access
      This work presents an alternative wearable tracking system based on a low-power wide area network. A complete GPS receiver was integrated with a textile substrate, and the latitude and longitude coordinates were sent to ...
    • An approximate expression to estimate signal-to-noise improvement in cylindrical near-field measurements 

      Romeu Robert, Jordi; Jofre Roca, Lluís; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1994-07-01)
      Article
      Open Access
      A very simple approximate expression for the process gain (PG) for the cylindrical case is derived. The different approximations and assumptions required to obtain this expression are shown. This expression might be useful ...
    • Analisis de antenas de reflector mediante procesado grafico 

      Rius Casals, Juan Manuel (1991)
      Conference report
      Open Access
      This paper shows a fast algorithm to calculate first contribution to the pattern radiation of a reflector antenna using the hardware capabilities of a high performance graphic workstation . It allows to design interactively ...
    • Analysis of a plasmonic graphene antenna for microelectronic applications 

      Suessrneier, C.; Thiel, F.; Wigger, Anna K.; Bolívar, Peter Haring; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Cabcllos Aparicio, A.; Banszcrus, L.; Stampfer, C.; Lemme, M. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Graphene offers a large potential to downscale antennas to the micrometer scale, due to its special dispersion relation and its ability to support plasmons in the THz frequency range. For an adequate performance of the ...
    • Analysis of fractal-shaped antennas using the multiperiodic travelling wave Vee model 

      Puente Baliarda, Carles; Soler, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2011)
      Conference report
      Restricted access - publisher's policy
      A novel analytical model to predict the radiation performance of the Sierpinski fractal multiband antenna is presented. The theoretical development allows one to accurately predict the antenna response to flare angle ...
    • Analysis of PIFA antenna coupling in nearby traces and reduction with CSRRs in PCB at 2.45 GHz 

      Gil Galí, Ignacio; Fernández García, Raúl (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      The electromagnetic coupling of a conventional planar inverted-F antenna (PIFA) antenna in the nearby layout traces is investigated in the 2.45 GHz industrial, scientific and medical radio band. The impact of a complementary ...
    • Análisis de Errores de Medida en Campo Próximo Cilíndrico 

      Soneira Ferrando, M. José; Clavera, Jordi; Jofre Roca, Lluís; Romeu Robert, Jordi; de los Reyes, Elías (Universidad Politécnica de Madrid (UPM), 1988)
      Conference report
      Open Access
      A prograrn to compute near and far fields generated by a planar array has been developed . Sirnulations on the effect of antenna and rnesurernent errors in the cylindrical near-far field transforrnations algorithrns have ...
    • Análisis de Soluciones de Antena para Smartphones 

      Teotino Márquez, Anna (Universitat Politècnica de Catalunya, 2015-11)
      Master thesis (pre-Bologna period)
      Open Access
      Nowadays phones must integrate a great number of services in a limited space in order to satisfy the user demands. New frequency bands appear for allocate new communication standards and the physical limitations of the ...
    • Angular Radiation Patterns of Nanoantennas: an Optical Yagi-Uda Antenna 

      González Curto, Alberto (Universitat Politècnica de Catalunya, 2009-09-09)
      Master thesis
      Open Access
      We address experimentally the radiation patterns of quantum dots coupled to optical nanoantennas at speci c positions. We show that the emission of the coupled system is determined by a variety of resonant and non-resonant ...
    • Antena microstrip dual en frecuencia basada en el triángulo fractal de Sierpinski 

      Anguera Pros, Jaume; Martinez, Enrique; Puente Baliarda, Carles; Borja, C.; Soler, Jordi (Unión Científica Internacional de Radio (URSI), 2004)
      Conference report
      Open Access
      A dual-frequency antenna based on the Sierpinski fractal with two parasitic patches to enhance the impedance bandwidth is presented. An electrical circuit model formed by RLC resonators is proposed to learn about the ...
    • Antenas 

      Cardama Aznar, Ángel; Jofre Roca, Lluís; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Blanch Boris, Sebastián; Ferrando Bataller, Miguel (Edicions UPC, 2002)
      Book
      Restricted access to UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UIC users
      En este libro se presentan los métodos fundamentales de análisis de antenas con un nivel de detalle que permite comprender sus principios de funcionamiento y conocer los parámetros de diseño que son de interés práctico. ...
    • Antenna design for microwave colonoscopy 

      Sont Colomer, Roberto (Universitat Politècnica de Catalunya, 2019-10)
      Master thesis
      Restricted access - confidentiality agreement
    • Antenna reconfigurability based on a novel parasitic pixel layer 

      Rodrigo López, Daniel; Damgaci, Yasin; Unlu, M.; Cetiner, Bedri Artug; Romeu Robert, Jordi; Jofre Roca, Lluís (2011)
      Conference report
      Restricted access - publisher's policy
      A novel reconfiguration method based in the use of pixel surfaces as parasitic elements is presented. This concept can be used to provide reconfigurability to a wide variety of non-reconfigurable antennas without requiring ...
    • Antennas based on low-cost thermoplastic polymer substrates for communication in the industrial, scientific and medical radio band 

      Gil Galí, Ignacio; Colom Fajula, Xavier (2019-05-10)
      Article
      Open Access
      This work addresses the design guidelines, manufacturing process and experimental test of several antennas based on low cost and low loss thermoplastic polymer substrates. The proposed antennas are based on patch topologies ...
    • Aplicació de Radars compactes d'ona mil·limètrica a la detecció ocular 

      Grao Grasa, Guillem (Universitat Politècnica de Catalunya, 2019-10)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • Are space-filling curves efficient small antennas? 

      González Arbesú, José María; Blanch Boris, Sebastián; Romeu Robert, Jordi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC., 2003-09-30)
      Article
      Open Access
      The performance of space-filling curves used as small antennas is evaluated in terms of quality factor and radiation efficiency. The influence of their topology is also considered. Although the potential use of these ...
    • Assessment of LTCC-based dielectric flat lens antennas and switched-beam arrays for future 5G millimeter-wave communication systems 

      Imbert Villà, Marc; Romeu Robert, Jordi; Baquero Escudero, M.; Martinez Ingles, Maria Teresa; Molina-Garcia Pardo, Jose Maria; Jofre Roca, Lluís (2017-10-30)
      Article
      Open Access
      IEEE This paper presents design, LTCC fabrication, and full experimental verification of novel dielectric flat lens antennas for future high data rate 5G wireless communication systems in the 60 GHz band. We introduce and ...